docs: def vrelg(v1, v2, ndim):
      """
      Return the relative difference between two vectors of general dimension.
  
      http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/vrelg_c.html
  
      :param v1: First vector 
      :type v1: Array of floats
      :param v2: Second vector 
      :type v2: Array of floats
      :param ndim: Dimension of v1 and v2.
      :type ndim: int
      :return: the relative difference between v1 and v2.
      :rtype: float
      """
      v1 = stypes.toDoubleVector(v1)
      v2 = stypes.toDoubleVector(v2)
      ndim = ctypes.c_int(ndim)
      return libspice.vrelg_c(v1, v2, ndim)